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High severity8.1NVD Advisory· Published Apr 1, 2025· Updated Apr 2, 2026

CVE-2025-21947

CVE-2025-21947

Description

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix type confusion via race condition when using ipc_msg_send_request

req->handle is allocated using ksmbd_acquire_id(&ipc_ida), based on ida_alloc. req->handle from ksmbd_ipc_login_request and FSCTL_PIPE_TRANSCEIVE ioctl can be same and it could lead to type confusion between messages, resulting in access to unexpected parts of memory after an incorrect delivery. ksmbd check type of ipc response but missing add continue to check next ipc reponse.

Affected products

6
  • Linux/Kernel6 versions
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 5 more
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.15,<6.1.131
    • cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*

Patches

5
6321bbda4244
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.gitvia osv
76861630b29e
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.gitvia osv
3cb2b2e41541
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.gitvia osv
1e8833c03a38
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.gitvia osv
e2ff19f0b7a3
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.gitvia osv

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

1

News mentions

0

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